1863 .] 
287 
entirely ferruginous ; by the yellow fascias of the abdomen above being 
continuous, or very slightly interrupted on the disk, and much attenu¬ 
ated in the middle, the fascia on the first segment is broader, not in¬ 
dented on each side anteriorly, but slightly so in the middle; and by 
the second segment beneath having a ferruginous stain on the disk, 
and the apical segments being obscurely margined posteriorly with 
yellow. 
Male. Diifers from the female as follows:—^the sides of the face, 
the clypeus except a black line on each side, a minute dot above the 
clypeus, the labrum and mandibles are yellow; the antennae beneath 
are ferruginous, and the scape in front yellowish; in one specimen the 
yellow fascia on the third segment of the abdomen above is continuous 
and slightly indented on each side posteriorly, in the other two speci¬ 
mens this fascia is widely interrupted in the middle; the fasciae on the 
two following segments are also continuous ; the sixth segment is black- 
ish-piceous; the apical segment black, bifid at tip. Length 3—5 
lines. 
Hah. Maine 2 % (Coll. Mr. E. Norton); Rock Island, Ill., 4 9, 
I % . (Coll. Benj. D. Walsh, Esq.) 
Allied to N. electa n, sp., but distinct from that species by the 
coarser punctures of the thorax; it also resembles N. feUiva n. sp. I 
would not be surprised if this species should eventually turn out to be 
an extreme variety of N. fervida, Smith. 
5. E’. bella n. sp. 
Male. Head black, finely punctured, densely clothed with short 
whitish hairs, those on the clypeus and labrum silvery; clypeus, la¬ 
brum, mandibles except tips which are piceous, orbits of the eyes 
beneath, and the face on each side of the clypeus, yellowish-white. 
Antennae as long as the head and thorax, black; flagellum in front 
rufo-piceous. Thorax entirely black, finely punctured, densely clothed 
with whitish hairs; tegulae dark ferruginous ; scutellum somewhat sub- 
bilobate. Wings hyaline, apical margins slightly clouded. Legs clothed 
beneath with whitish hairs ; coxae, trochanters and femora except tips, 
blackish; tibiae ferruginous, stained with blackish; tarsi ferruginous. 
Abdomen minutely' punctured, piceous, apical margin of the segments 
tinged with ferruginous; first segment above blackish or piceous, obso- 
letely stained with ferruginous, on each side in the middle a transverse 
